Sofa

ABSTRACT

The disclosure provides a sofa, comprising a sofa body, a first folding sofa, a second folding sofa, and two supporting frames, and three forms can be achieved with combined structures of the above components: a fully unfolded state in which both the first folding sofa and the second folding sofa are unfolded; a semi-unfolded state in which the first folding sofa is unfolded and the second folding sofa is folded; and a fully folded state in which both the first folding sofa and the second folding sofa are folded. The use of the sofa is enabled to be diversified and the use performance is improved.

TECHNICAL FIELD

The present invention relates to an instrument for sitting and lying, and in particular to a sofa.

BACKGROUND

A sofa is an instrument for sitting and lying used when we have a rest. The sofa in the prior art has a fixed structure and is composed of a sitting and lying part, a backrest fixed to the sitting and lying part, and an armrest. However, such a sofa has a large volume during transportation, resulting in inconvenience in transportation, and the backrest cannot be placed down and also the sitting and lying surface area of the sitting and lying part cannot be enlarged, resulting in a relatively limited use manner.

SUMMARY

The present invention is intended to provide a sofa designed to solve the above technical defects.

The sofa designed according to the present invention comprises a sofa body, a first folding sofa, a second folding sofa, and two supporting frames, wherein the first folding sofa comprises a first folding frame and a second flexible body provided on the first folding frame, the second folding sofa comprises a second folding frame and a third flexible body provided on the second folding frame, and the two supporting frames are respectively rotatably mounted to a bottom surface of the first folding frame and a bottom surface of the second folding frame.

Three forms can be achieved with combined structures of the above components:

-   -   a fully unfolded state in which both the first folding sofa and         the second folding sofa are unfolded and both the two supporting         frames are in an unfolded state;     -   a semi-unfolded state in which the first folding sofa 2 is         unfolded and the second folding sofa 3 is folded, one of the         supporting frames is in an unfolded state, and the other one of         the supporting frames is in a folded state; and     -   a fully folded state in which both the first folding sofa 2 and         the second folding sofa 3 are folded, and both the two         supporting frames are in a folded state.

The sofa designed according to the present invention has the following beneficial effects:

-   -   1. The sofa of the present invention has three forms: a fully         unfolded state in which both the first folding sofa and the         second folding sofa are unfolded; a semi-unfolded state in which         the first folding sofa is unfolded and the second folding sofa         is folded; and a fully folded state in which both the first         folding sofa and the second folding sofa are folded, such that         the use of the sofa is enabled to be diversified and the use         performance is improved.     -   2. When in the semi-unfolded state and in the fully unfolded         state, the adjustment frame can perform a turnover angle         adjustment action and the angle can be locked after the         adjustment, such that the sofa can be used as a recliner chair,         so as to make the user feel more comfortable.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view (I) of an internal skeleton structure;

FIG. 2 is a schematic view (II) of an internal skeleton structure;

FIG. 3 is a schematic view of an internal skeleton structure when the adjustment frame is in a folded and raised state;

FIG. 4 is a perspective view of an internal skeleton;

FIG. 5 is a schematic view (I) of a structure of a sofa in a fully unfolded state;

FIG. 6 is a schematic view (II) of a structure of a sofa in a fully unfolded state;

FIG. 7 is a schematic view of a structure of a sofa in a semi-unfolded state;

FIG. 8 is a schematic view of a structure of a sofa in a fully folded state;

FIG. 9 is a schematic view of an internal skeleton structure in a fully folded state;

FIG. 10 is a schematic view (I) of a structure of a turnover locking device; and

FIG. 11 is a schematic view (II) of a structure of a turnover locking device.

In the drawings: 1: sofa body; 10: cavity; 11: supporting body; 12: sofa frame; 13: first side portion; 14: second side portion; 15: first recess; 16: second recess; 17: accommodating cavity; 18: first flexible body; 2: first folding sofa; 20: flexible body folding structure; 21: first folding frame; 22: fixed frame; 221: connecting groove; 23: adjustment frame; 231: hinge protrusion; 24: locking wheel; 241: ratchet surface; 242: circular surface; 25: pawl; 26: second flexible body; 3: second folding sofa; 31: second folding frame; 32: third flexible body; 4: supporting frame; 5: curved elastomer; 6: hinge groove; 7: first hinge rod; and 8: second hinge rod.

DESCRIPTION OF THE EMBODIMENTS Embodiment 1

As shown in FIG. 5 , the sofa described in this embodiment comprises a sofa body 1, a first folding sofa 2, a second folding sofa 3, and two supporting frames 4, and three forms can be achieved with combined structures of the above components: a fully unfolded state in which both the first folding sofa 2 and the second folding sofa 3 are unfolded, as shown in FIGS. 5 and 6 ; a semi-unfolded state in which the first folding sofa 2 is unfolded and the second folding sofa 3 is folded, as shown in FIG. 7 ; and a fully folded state in which both the first folding sofa 2 and the second folding sofa 3 are folded, as shown in FIGS. 3 and 8 .

As shown in FIGS. 1 to 9 , the sofa body 1 comprises a sofa frame 12 and a supporting body 11. The supporting body 11 has a metal frame structure which is generally made of stainless steel. A first flexible body 18 is mounted on the sofa frame 12, the first flexible body 18 is composed of a sponge cushion and a covering cloth wrapped around the sponge cushion, and the bottom of the covering cloth is extended to cover the supporting body 11. The sofa frame 12 is stacked on a top surface of the supporting body 11. The supporting body 11 comprises an accommodating cavity, a first side portion 13, a second side portion 14, a first recess 15 provided on the first side portion 13, and a second recess 16 provided on the second side portion 14. The first recess 15 and the second recess 16 are concavely formed downwards from the top surface of the supporting body 11, and the first recess 15 and the second recess 16 are both provided in communication with the accommodating cavity; preferably, a bottom body of the sofa frame 12 can be inserted into a top groove of the supporting body 11, such that the sofa frame 12 and the supporting body 11 are positioned relative to each other.

As shown in FIGS. 1 to 9 , the first folding sofa 2 comprises a first folding frame 21 and a second flexible body 26 provided on the first folding frame 21, and the second flexible body 26 is composed of a sponge cushion and a covering cloth wrapped around the sponge cushion. An inner side wall of the first recess 15 is hinged to a first hinge rod 7 via a pin shaft, a hinge end of the first hinge rod 7 is hinged to a hinge part of the first folding frame 21 via a pin shaft, and a width of the first folding frame 21 is less than a width of the first recess 15. The folding operation of the first folding sofa 2 is facilitated by the structural arrangement thereof.

As shown in FIGS. 1 to 9 , the second folding sofa 3 comprises a second folding frame 31 and a third flexible body 32 provided on the second folding frame 31, and the third flexible body 32 is composed of a sponge cushion and a covering cloth wrapped around the sponge cushion. An inner side wall of the second recess 16 is hinged to a second hinge rod 8 via a pin shaft, a hinge end of the second hinge rod 8 is hinged to a hinge part of the second folding frame 31 via a pin shaft, and a width of the second folding frame 31 is less than a width of the second recess 16. The folding operation of the second folding sofa 3 is facilitated by the structural arrangement thereof.

The two supporting frames 4 are respectively rotatably mounted to a bottom surface of the first folding frame 21 and a bottom surface of the second folding frame 31. The two supporting frames 4 are each formed in a U-shaped structure and made of metal materials. The bottom surface of the first folding frame 21 and the bottom surface of the second folding frame 31 are each formed with two hinge grooves 6, and top ends of two rod bodies of each supporting frame 4 are respectively hinged to the two hinge grooves 6.

The sofa is used as follows.

When in a fully unfolded state, as shown in FIGS. 1 to 5 , the first folding frame 21 and the second folding frame 31 are both in an unfolded horizontal state, the two supporting frames 4 are in a vertical state to respectively support the first folding frame 21 and the second folding frame 31, such that the first folding sofa 2 and the second folding sofa 3 are supported in an unfolded state, the first folding sofa 2 is located beside the first side portion 13, and the second folding sofa 3 is located beside the second side portion 14. At this time, an included angle between the first hinge rod 7 and the first side portion 13 is an obtuse angle, and an included angle between the second hinge rod 8 and the second side portion 14 is an obtuse angle. Alternatively, another fully unfolded state is achieved based on the fully unfolded state described above, that is, one of the supporting frames 4 is unfolded, and the other one of the supporting frames 4 is folded, so as to achieve a structure in which the second folding sofa 3 is in an inclined state.

When in a semi-unfolded state, as shown in FIG. 7 , the first folding frame 21 is in an unfolded horizontal state, the supporting frame 4 on the first folding frame 21 is in a vertical state to support the first folding frame 21, such that the first folding sofa 2 is supported in an unfolded state, whereas the second folding frame 31 is located below the sofa frame 12 after being folded through turnover by the second hinge rod 8, and the second hinge rod 8 is folded into the accommodating cavity, such that the second folding sofa 3 and the supporting frame 4 on the second folding frame 31 are both received into the accommodating cavity of the supporting body 11, the third flexible body is in a deformed state, and the supporting frame 4 on the second folding frame 31 is also in a folded state. At this time, the included angle between the first hinge rod 7 and the first side portion 13 is an obtuse angle.

When in a fully folded state, as shown in FIGS. 8 and 9 , the first hinge rod 7 and the second hinge rod 8 are turned over to turn over both the first folding sofa 2 and the second folding sofa 3 into the accommodating cavity, the first folding sofa 2 and the second folding sofa 3 are stacked up and down, the second flexible body and the third flexible body are both in a deformed state, the two supporting frames 4 are both in a folded state, and both the first hinge rod 7 and the second hinge rod 8 are turned over into the accommodating cavity.

A hinge position of a lower end of the first hinge rod 7 is higher than a hinge position of a lower end of the second hinge rod 8, the hinge position of the lower end of the first hinge rod 7 is on an inner wall of the first recess 15, and the hinge position of the lower end of the second hinge rod 8 is on an inner wall of the second recess 16, such that the second folding sofa 3 is located below the first folding sofa 2 after both the first folding sofa 2 and the second folding sofa 3 are turned over into the accommodating cavity.

In this embodiment, as shown in FIGS. 1 to 4 , a flexible body folding structure 20 is mounted on a top surface of the first folding frame 21, the flexible body folding structure 20 comprises a fixed frame 22 and an adjustment frame 23, a hinge part of the adjustment frame 23 is hinged to a hinge part of the fixed frame 22, and a turnover locking device is provided between the hinge part of the adjustment frame 23 and the hinge part of the fixed frame 22 to lock the adjustment frame 23 after it is turned over. The hinge part of the adjustment frame 23 is two hinge protrusions 231, the hinge part of the fixed frame 22 is two connecting grooves 221, the hinge protrusions 231 are respectively hinged within the two connecting grooves 221 via a pin shaft, and the turnover locking device is provided between the hinge protrusion 231 and the connecting groove 221. As shown in FIGS. 10 and 11 , the turnover locking device is composed of a locking wheel 24, a torsion spring, and a pawl 25 to achieve the locking between the adjustment frame 23 and the fixed frame 22. The locking wheel 24 is fixed on a side wall of the hinge protrusion 231, and the locking wheel 24 comprises a ratchet surface 241 and a circular surface 242. One end of the pawl 25 is hinged to an inner wall of the hinge groove 6 via a pin shaft and the torsion spring. When the pawl 25 engages with a locking surface of the ratchet, the locking between the adjustment frame 23 and the fixed frame 22 is achieved with an obtuse angle between them, and when the pawl 25 engages with the circular surface 242, the unlocking between the adjustment frame 23 and the fixed frame 22 is achieved, such that the adjustment frame 23 can be laid down to a horizontal form of the adjustment frame 23.

Preferably, the adjustment frame 23, the sofa frame 12, and the second folding frame 31 are each formed with a cavity 10, and a curved elastomer 5 which uses elastic metal filaments is mounted within the cavity 10. 

What is claimed is:
 1. A sofa, comprising: a sofa body, wherein the sofa body comprises a sofa frame and a supporting body, a first flexible body is mounted on the sofa frame, the sofa frame is stacked on a top surface of the supporting body, the supporting body comprises an accommodating cavity, a first side portion, a second side portion, a first recess provided on the first side portion, and a second recess provided on the second side portion, and the first recess and the second recess are both provided in communication with the accommodating cavity; a first folding sofa, wherein the first folding sofa comprises a first folding frame and a second flexible body provided on the first folding frame, an inner side wall of the first recess is hinged to a first hinge rod via a pin shaft, a hinge end of the first hinge rod is hinged to a hinge part of the first folding frame via a pin shaft, and a width of the first folding frame is less than a width of the first recess; a second folding sofa, wherein the second folding sofa comprises a second folding frame and a third flexible body provided on the second folding frame, an inner side wall of the second recess is hinged to a second hinge rod via a pin shaft, a hinge end of the second hinge rod is hinged to a hinge part of the second folding frame via a pin shaft, and a width of the second folding frame is less than a width of the second recess; and two supporting frames, wherein the two supporting frames are respectively rotatably mounted to a bottom surface of the first folding frame and a bottom surface of the second folding frame; and wherein when in a fully unfolded state, the first folding frame and the second folding frame are both in an unfolded horizontal state, the two supporting frames are in a vertical state to respectively support the first folding frame and the second folding frame, such that the first folding sofa and the second folding sofa are supported in an unfolded state, the first folding sofa is located beside the first side portion, and the second folding sofa is located beside the second side portion; when in a semi-unfolded state, the first folding frame is in an unfolded horizontal state, the supporting frame on the first folding frame is in a vertical state to support the first folding frame, such that the first folding sofa is supported in an unfolded state, whereas the second folding frame is located below the sofa frame after being folded through turnover by the second hinge rod, such that the second folding sofa and the supporting frame on the second folding frame are both received into the accommodating cavity, the third flexible body is in a deformed state, and the supporting frame on the second folding frame is also in a folded state; and when in a fully folded state, the first hinge rod and the second hinge rod are turned over to turn over both the first folding sofa and the second folding sofa into the accommodating cavity, the first folding sofa and the second folding sofa are stacked up and down, the second flexible body and the third flexible body are both in a deformed state, and the two supporting frames are both in a folded state.
 2. The sofa according to claim 1, wherein a flexible body folding structure is mounted on a top surface of the first folding frame, the flexible body folding structure comprises a fixed frame and an adjustment frame, a hinge part of the adjustment frame is hinged to a hinge part of the fixed frame, and a turnover locking device is provided between the hinge part of the adjustment frame and the hinge part of the fixed frame to lock the adjustment frame after it is turned over.
 3. The sofa according to claim 1, wherein the bottom surface of the first folding frame and the bottom surface of the second folding frame are each formed with two hinge grooves, the two supporting frames are each formed in a U-shaped structure, and top ends of two rod bodies of each supporting frame are respectively hinged to the two hinge grooves.
 4. The sofa according to claim 2, wherein the adjustment frame, the sofa frame, and the second folding frame are each formed with a cavity, and a curved elastomer is mounted within the cavity. 